1. polarity
2. hydrophobic
3. cohesion
4. hydrophilic
5. surface tension
what do you mean by cohesion ?cohesion is an attractive force of measure where molecules are stick to each other and it is caused by cohesive force between like molecules.
It is an intrinsic property of a molecule, derived by its shape, structure, and electric charge distribution.
When cohesive molecules are become closer to each other, the electrical attraction between these molecule holds them together.
This forces are responsible for surface tension. For example mercury is a cohesive substance, strongly attracted to each other, bead together, sticks to itself when it flows.
When cohesion and adhesion combinedly work, it will lead to capillary action.
Hence, when water climbs up the interior of a thin glass tube or the stem of a plant, Cohesion holds the water together and adhesion helps the water molecules stick to glass.
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Human activities can have more affect on the environment than you may think. When a dam is built, what are some of the impacts it will have on the surrounding environment?
Practice
Answer in at least 2 complete sentences.
Answer:
When a dam is built, the rest of the lake will begin to drought and remove moisture for the wildlife. Making the wildlife adapt, and in severe cases, become endangered.
Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish).
The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations? Be sure to explain whether the dolphin population, the squid population, and the herring population will change, and why.
Answer:
the squid population could decrease, because the tuna population is increasing and they would eat more squid, so the dolphin population would also decrease because there would be less squid to eat, and because there are less squid the herring population would increase.
In trophic webs, there is an equilibrium between species until a change occurs. The increase in tuna's population causes a decrease in dolphins' and squids' populations, and an increase in herring's one.
------------------------
To answer this question, let us first review some theoretical framework.
The trophic web is a relationship process between different organisms, through which occurs transference of energy.
The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
The first link corresponds to a producer organism -autotroph-. The following links are the consumers -heterotrophs-: herbivores and carnivores. The last links are the decomposers that degrade organic matter from dead organisms.As it is a web, all organisms are equilibrated until a change occurs.
When the change affects any of the involved links, there can be a cascade effect on the web.
A change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
Also, when two or more species are competing for the same source of food, a change in any of the population sizes will affect the other ones.
Now, let us analyze the exposed example.
We know that,
tuna and dolphins eat squid, squid eat herring.We need to figure out what is the cascade effect caused by the increase in the tuna population.
Tuna and DolphinsWe know that tuna and dolphins compete for food items -squids-.
An increase in the number of tuna individuals means a higher competition pressure for dolphins.
The more tuna there are, the more squids they eat, and the less food available there is for dolphins.
Since there are not enough squids for dolphins, their population decreases in size.
Dolphins are negatively affected by tuna's increase.
**** Tuna population increases ⇒ Dolphins population decreases ****
Tuna and Squids
Tuna applies a significant predation pressure on squids, which are their main source of food.
The more tuna there are, the more squids they eat.
Squids probably can not reach sexual maturity or do not get to successfully reproduce, because they are eaten by tuna.
So squids population is negatively affected by the tuna population increase.
**** Tuna population increases ⇒ Tuna population decreases. ****
Herring and SquidsSince squids feed on herring, any change in squids' population size affects herrings directly.
When the squids' population decreases in size, the herring population increases. More fishes get to survive and successfully reproduce.
The predation pressure of squids on herring decreases.
The herring population is positively affected by the squids' population decrease.
*** Squids population decreases ⇒ Herring population increases. ***
Summing up, the cascade effect is as follows,
Tuna population increasesDolphin population decreasesSquids population decreasesHerring population increases---------------------------
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I need help on this so can someone please help? :))
I WILL GIVE BRAINLIEST BUT THE QUESTIONS MUST ALL BE ANSWERED
Directions: Identify the manipulated variable and responding variable for each hypothesis.
HINT: If (fill in manipulated variable), then (fill in responding variable)
1. If plants are watered, then growth height will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
2. If chocolate is given to teachers, then amount of homework will decrease.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
3. If trees have leaves, then bird nests will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
4. If acid rain is in water, then fish population will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
5. If calcium is given, then bone strength will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: _______________________________________
Answer:
huh
Explanation:
Magnesium is a metal with two electrons in its outermost energy level. When it becomes an ion, what happens to its valence electrons? What happens to its charge?
Answer:The answer to your question is Mg loses its valence electrons and acquire a positive charge (Mg⁺²).
Explanation:
Answer:
When it becomes an ion, it donates its valence electrons and becomes positively charged. The positively charged ion would be Mg²⁺ because it loses two electrons. It would have 12 protons and 10 electrons.
Hope that helps.
help me pls omg , im stuck
Answer:
b
Explanation:
Which of the following is NOT a characteristic that all living things share? *
using energy
made of cells
able to talk
reproduce
Other:
Answer:
C- "able to talk"
Explanation:
Not all living things cant talk, but they all use energy, are made of cells and can reproduce.
What are three ways that synthetic materials benefit human society?
Answer:
The benefits in synthetics are many, they have properties that we can't find in nature, they allow us to make things stronger, lighter, more fuel-efficient, shiner, longer lasting. And at the same time, we do add to the pollution of our world, affect the health of animals and humans, and requires energy to make.
Explanation:
Synthetic materials, also known as man-made or artificial materials, have made significant contributions to human society. Like Improved Performance and Durability, Expanded Range of Applications, etc.
Here are three ways in which synthetic materials benefit us:
Synthetic materials often possess superior properties compared to natural materials, such as increased strength, durability, and resistance to wear and tear.
Expanded Range of Applications: Synthetic materials have opened up new possibilities by offering characteristics that may not be readily available in nature.
Resource Conservation and Environmental Benefits: Synthetic materials can help conserve natural resources by providing alternatives to scarce or unsustainable materials.
Thus, while synthetic materials have numerous benefits, it is essential to consider their environmental impact throughout their lifecycle, including disposal and potential hazards.
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So im confused i don't know what im supposed to do here
So I believe you are supposed to take notes based on the guiding questions (the questions on the side).
Answer:
save your notes in a google drive folder then go back to canvas and click on the "google drive" tab then scroll down and once you see the name of the folder you saved your notes in, click on it then hit submit
Explanation:
Anyone (cool, funny, middle school) wanna start a conversation?
Answer:
sure
Explanation:
what's up
Answer:
Im down, Im in 7th
Explanation:
sure hi lol
what is the level of organization in living things
Which one is right pls help
Answer:
The answer is Electron
Explanation:
Answer:
the answer is electron
One atom of (blank) bonded to two atoms of (blank).
Answer:
One atom of Oxygen bonded to two atoms of Hydrogen. It's a water molecule. The element consists of two identical atoms which is a diatomic molecule.
Explanation:
Answer:
One atom of Oxygen bonded to two atoms of Hydrogen. It's a water molecule. The element consists of two identical atoms which is a diatomic molecule.
Explanation:
PLEASE HELP ON MY FINAL
Which of the following factors have been most influential in allowing manned space exploration?
A- design of rockets capable of escaping earth’s gravitational pull
B- ability to turn food into pills and powders so they can be eaten in space
C- development on powerful batteries which provide light for astronauts to use in the darkness of space
D- creation of atmospheric systems that provide oxygen while absorbing carbon dioxide
Answer:
The answer is D- creation of atmospheric systems that provide oxygen while absorbing carbon dioxide
Explanation:
By using elimination of choice that answer seems the most accurate.
What is the function of a cell wall?
What are some advantages and disadvantages of sexual reproduction?
Answer:
Allows for diversity, but is slow and inefficient compared to asexual.
help im being TIMED A batter hits two balls during practice. Ball A travels 10 meters, while ball B travels 12 meters. The batter decides to hit ball A with less force. How will this change the motion of ball B?
The motion of ball B will increase.
The motion of ball B will decrease.
The motion of ball B will stay the same.
The motion of ball B will become the same as ball A.
Answer:
c
Explanation:
The batter aint changing the force he is using while hitting Ball B. Therefore, Motion of ball b will stay the same :D
Answer:
The third one
The Motion of ball b will stay the same
hope this helps
Explanation:
If density is calculated by mass divided by volume and the mass increases, what would happen to the density of an object?
Would it increase or decrease?
4 QUESTIONS PLEASEEE HELP WILL GIVE BRAINLIEST!!!!
1. How are features like trenches, plains, ridges and valleys formed on the ocean floor?
2. Where does 90% of the marine life live in oceans?
3. a. Where are nutrients abundance? b. Where do these nutrients come from?
4. How do organisms deep I the ocean get their nutrients?
Answer:
1. Converging and Diverging plates
2. In the sunlit zone
3. a.Close to coastlines and upwelling zones b. Nutrients are brought to the surface ocean from depth by the upwelling process
4. Dead organic matter that come from phytoplankton and other plants
Answer:
1. Converging and Diverging plates
2. In the sunlit zone
3. a.Close to coastlines and upwelling zones b. Nutrients are brought to the surface ocean from depth by the upwelling process
4. Dead organic matter that come from phytoplankton and other plants
Explanation:
Of the first 103 elements, how many have 2 letters in their symbols?
Help me plzz can't fail this
due today
Answer:
I'm lazy so I won't explain
1. Groups are the vertical lines on the periodic table
2. Periods are the horizontal lines on the periodic table
3. *make sure to always capitalize the 1st letter, and lowercase the 2nd
*Always use print letters
a. Mg b. K c. Fe d. Cu e. Xe f. Pt
4. a. Carbon b. Lead c. Arsenic d. Osmium e. Krypton f. Strontium
5. a. 1 b. 4 c. 7 d. 14 e. 5 f. 5
6. a. 16 b. 2 c. 1 d. 12 e. 17 f. 8
Hope this helps u
Water is less dense as ice than liquid
Your answer:
true
false
Answer:
Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
Explanation:
Answer:
false
Explanation:
Hope that helps!!
Which one would charge faster?
How do living and nonliving things differ?
Answer:
Hey mate.....
Explanation:
This is your answer,
Living things differ from non living things through motion, action, expression, way of living and etc......
Livings things:-
1. Livings things means something that keeps on moving or doing any particular work.
2. Livings things mostly consume, remove, and reproduce through different ways.
3. Examples of livings things are humans, animals, birds, reptiles, and even the germs like bacteria, fungi, ameoba and etc....
Non Livings things:-
1. Non Living things means something that just stays like a statue usually and never move or do a particular work.
2. Non living things do not consume, remove or reproduce anything.
3. Examples of non living things are table, chair, fan, house, book etc....
hope it helps you mate....
MARK ME AS THE BRAINLIEST.....
Follow me.....!!!!
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ help me!!!!!
Classify the following substances as:
Pure Substance – P Solution – S Mechanical Mixture – MM
Suspension – SU Colloid - C
Substance
Apple Juice
2005 Penny
Propane
Chicken Noodle Soup
Milk
Salsa
14 Karat Gold Ring
Air
Pepsi (in a glass)
Chocolate Chip Cookie
Answer:
dude me too in which garde are you ☠
I need help now god dam
Answer: 1
Explanation: Step by Step
Does anyone know the Lab Report of acids and bases???? HELP PLZ WILL GIVE BRAINLIEST WHOEVER HELPS PLZ
Answer:
Litmus is a natural acid-base indicator extracted from a type of lichen. If you have red and blue litmus paper, you can test different solutions for whether they are acids or bases. Blue litmus paper turns red when a solution is acidic; red litmus paper turns blue in basic solutions
Explanation: Hope this helped
Which statement best describes a difference between scientists and engineers?
Scientists build prototypes, while engineers test failure points.
Scientist design machines, while engineers conduct experiments.
Scientists and engineers are the same. They both study how things work.
Scientists study how things work, while engineers create new things.
Look at the table that shows values for Coast Guard search and rescue operations. Write an evaluation of the success of the Coast Guard’s efforts. Be sure to support your answer with evidence from the data table.
Answer:stats are higher than before
Explanation: its their evaluation because the stats are higher than beofre
What causes the electrons to move and form static electricity?
moist air
dry air
friction
Answer:
friction
Explanation:
The rubbing of certain materials against one another can transfer negative charges, or electrons.
The friction generating between the surface of two objects causes the electrons to move from one body to the other and form static electricity. Hence, option c is correct.
What is static electricity ?Static electricity is the flow of electrons that occurs due to the temporary polarization of two bodies. When a conducting surface rub on other surface, they gets electrons by frictional force.
These free flow of electrons make them negatively charged. When this negatively charged body comes in contact with a non conducting surface they latter gets polarized by the electrons of negatively charged body.
The positive charges of the nonconducting surface gets attracted to the negative body and the electrons flow from the negatively charged body to the partially polarized positive body. This is called static electricity.
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